[pathlib] Deprecate PurePath.as_uri (#15178)

Author: max-muoto

stdlib/pathlib/__init__.pyi

@@ -90,6 +90,7 @@ class PurePath(PathLike[str]):
     def __rtruediv__(self, key: StrPath) -> Self: ...
     def __bytes__(self) -> bytes: ...
     def as_posix(self) -> str: ...
+    @deprecated("Deprecated since Python 3.14; will be removed in Python 3.19. Use `Path.as_uri()` instead.")
     def as_uri(self) -> str: ...
     def is_absolute(self) -> bool: ...
     if sys.version_info >= (3, 13):
@@ -345,6 +346,8 @@ class Path(PurePath):
             self, top_down: bool = True, on_error: Callable[[OSError], object] | None = None, follow_symlinks: bool = False
         ) -> Iterator[tuple[Self, list[str], list[str]]]: ...
 
+    def as_uri(self) -> str: ...
+
 class PosixPath(Path, PurePosixPath):
     __slots__ = ()